PONGO 189 
the animal only from Von Wurmb’s description, never having seen 
it himself, in his own diagnosis sadly confuses two or more genera of 
the Primates together, and among other things says that his Pongo 
wurmbi has “Bakentaschen und Gesatrschwielen.”’ Now no Anthro- 
poid has cheek pouches, and only Hytopates has very small hind 
callosities, but the expansion of the skin on the throat may have been 
mistaken for a pouch, otherwise Baboons and Apes have been mixed 
together. As, however, there seems to be no doubt that P. wurmbi 
was an Ourang, the name to be applied to the Borneo species would 
be that bestowed by Tiedemann, if it should hereafter prove not to be 
the same species as the Sumatran Ourang, whose name would then 
be abelit. 
Simia satyrus Linn., 1766, cannot be employed, because the name 
was given by him to a species of Chimpanzee, in the 10th edition of his 
Systema Nature, 1758, p. 25. 
LITERATURE OF THE SPECIES. 
Bornean Ourang. 
1763. Hoppius, in Amenitates Academice. 
Ponco PyGM&US first described as Simia pygmeus. 
1766. Linneus, Systema Nature. 
PoNGO PYGMZUS renamed Simia satyrus. 
1808. F. Tiedemann, Zoologie. 
In this work an Ourang from Borneo was named Pongo 
wurmbi = P. pyemzus Hoppius. 
1812. E. Geoffroy St. Hilaire, in Annales du Muséum d’Histoire 
Naturelle, Paris. 
In his Tableau des Quadrumanes this Author places the Ourang 
in two different genera, each genus having one species of this 
great Ape. Pithecus, “téte ronde, bras longs,” with P. satyrus 
= Ponco pycMus, and also including in the same genus three 
forms of HytopaTEes. The second genus is Pongo, “téte 
pyramidale, longs bras”; with one species P. wurmbi = P. 
pyGM#us. The characters of the genera ‘téte rond’ and ‘téte 
pyramidale’ are of no distinctive value, representing as they do 
merely differences of age, or possibly sex. 
1826. Clark, in Asiatic Researches, Calcutta. 
The Sumatran Ourang is here called Simia abelit. 
1836. R. Owen, in Proceedings of the Zoological Society of London. 
A female Ponco pycmMzus described as Pithecus morio. 
